Shaft-coupling



2 Sheets-Sheet 1. E. P. H. CAPRON. SHAFT GOUPLING.

Patented Mar. 4; 189

/II mmv'm EE l v i l (No Model.) EI H' CAPRON.

SHAFT GOUPLING.

No. 422,720. e Patenjzed Mar. 4, 1890.

UNITED STATES PATENT OEEICE.

ELISI-IA P. II. CAPRON, OF NORVALK, CONNECTICUT.

lSHAFT-COUPLING.

SPECIFICATION forming part of Letters Patent No. 422,720, dated March 4, 1890. Application filed February 9, 1889. Renewed November 21, 1889. Serial No. 331,053. (No model.)

To a/ZZ whom it may concern: l

Be it known that I, ELISHA P. II. CAPRON, a citizen of the United States, residing at Norwalk, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Shaft-Couplings; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use vand which will furthermore possess advantages in point of inexpensiveness, durability, and general efficiency.

In the drawings, Figure l is a perspective view of a shaft-coupling embodying my invention. Fig. 2 is a vertical longitudinal sectional view thereof on the line no on, Fig. l. Fig. 3 is a horizontal longitudinal sectional view on the line y y, Fig. -l. Fig. 4 is a transverse sectional view on the line Fig. 2, looking toward the center. Fig. 5 is a similar view on the line y y, Fig. 2. Fig. (i is a detail perspective view of one of the compression-blocks. Fig. 7 is a detail sectional view illustrating a modification.

Corresponding parts in the figures are denoted by the same letters of reference.

Referring to the drawings, A designates a shell, preferably cylindrical and flanged at its outer edges, as shown at a, which is provided at one side its longitudinal center with a chamber B, extending entirely through and approximately rectangular in crosssection.

`This chamber has a concaved tcp or outer side b, corresponding in contour to the circumference of the shell. At the opposite side of the center of the shell and opening into the chamber B is a supplementary chamber C, semicircular in crosssection and corresponding in length to the said chamber B. This chamber C is smaller in diameter than the width of chamber B, thus forming shoulders Y Fitting Within the chamber B and occupy! ing the lower portion thereof are two oppositely-disposed compression-blocks F F, the inner ends of which rest against two oppositely-disposed shoulders G G, located centrally within the chamber B and at each side the latter. These shoulders or projections preferably extend from the shoulders l2 to a point at or near the plane of top of the inner ends of the blocks F. Thetops of these blocks or the sides nearest the circumference of the shell are beveled or inclined, the thickest portion being at their inner ends, while their lower or opposite sides are concave,- forming a longitudinal recess ff, segmental in crosssection and of the same diameter as the chamber C. The sides of vthese recesses engage the ends D of the shafting, and are caused to bind against said ends by wedges II H, fitting Within the chamber B, as shown. The bottom or inner sides of these wedges are beveled or inclined and engage the correspondingly-inclined tops ofthe blocks F. The tops of these wedges are also preferably arched or conveXed and correspond with and engage the concave top b of the chamber B, while the sides of the blocks fit closely against the sides of the chamber, by means of which construction any lateral movement of the wedges is prevented. The wedges are also provided with centrally-disposed longitudinal holes or perforations h h.

I designates a double bolt provided with a central enlarged and angular portion'z', which is located centrally within the shell above the shoulders G; and has one of its sides engag ing the top of the chamber B to prevent the bolt from turning. The stems or body por- IOC tion I I extend through the holes or perforaof these nuts the wedges are forced together,

By means thereby compressing the blocks E and, causing them to bind against the ends of the shafting.

In the modification illustrated in Fig. Z I have shown the bolt I With one end east integral with one of the Wedges, While the other end passes through a hole or perforation in the remaining wedge, and the end of the bolt is provided with a nut, as before described, which construction may in some instances be found preferable.

I claim as my invention-- I. The Combination, in a shaft-Coupling, with the shell provided with a longitudinal chamber an d with a Centrally-disposed shoulder at eaeh side the latter, of compressionbloeks located in said chamber and adapted to bear against the` shoulders to limit the movement of said blocks, Wedges for oompressing the blocks, a bolt passing through the Wedges, and adjustable nuts upon the ends of said bolt, substantially7 as and for the purpose set forth. 2. The herein-described 'shaftcoupling, 'comprising the shell provided with a longiltudinal chamber, compression-blocks provided With beveled top surfaces, wedges having beveled bottom surfaces, a bolt having a Cent-ral enlarged portion to retain the same against turning, the ends of said bolts passing through the Wedges, and adjusting-nuts upon the said ends, for the purpose herein set forth.

3. The herein -deseribed shaft-coupling, Comprising a shell Wit-h a main longitudinal ehamber at 4one side the longitudinal center and a supplementary chamber opposite to and opening into said main chamber, compression-bloeks loeated in the latter, having ooneave lower or inner surfaees and inelined top or outer surfaces, said blocks having their inner ends resting against shoulders or projections oppositely and centrally disposed within vthe main Chamber, and Wedges for compressing said blocks, provided With an adjustingbolt passing` theretln-ough, substantially as set forth. p

In testimony whereof I affix my signature in presence ot' tivo Witnesses.

ELISHA P. II. CAPRON.

NTitiiesses:

ROBERT B. CRAWFORD, ALFRED E. AUSTIN. 

